Dodatak:Popis mekušaca, J
Ja
urediJacksonena Iredale, 1937
uredi- Jacksonena delicata (Hedley, 1912)
- Jacksonena rudis (Hedley, 1912)
Mollusca → Gastropoda → Stylommatophora → Sigmurethra → Helicoidea → Camaenidae
Mollusca → Bivalvia → Pholadomyida
Jactellina Iredale, 1929
uredi- vidi Tellina Linnaeus, 1758
- Janaoliva
- Janolus
- Janthina
- Janthinidae
- Japanonoba
Japanochlamys Habe, 1946
uredi- Japanochlamys decens Pilsbry & Hirase, 1904
Mollusca → Gastropoda → Pulmonata → Helicarionoidea → Helicarionidae
- Japelion
- Japetella
- Japeuthria
- Japonactaeon
- Jardinella
- Jason
- Jaspidella
- Jaspidiconus
- Jaton
- Jayella
Je
uredi- Jeffreysina
- Jeffreysomya
- Jenneria
Mollusca → Bivalvia → Hippuritida → Radiolitidae
Mollusca → Bivalvia → Hippuritida → Polyconitidae
Ji
uredi†Jiangxiella Liu 1968
uredi- †Jiangxiella datianensis Liu 1976
- †Jiangxiella elliptica Liu 1976
- †Jiangxiella plana Liu 1976
- †Jiangxiella subovata Liu 1976
Mollusca → Bivalvia → Trigoniida → Pseudocardinioidea → Pseudocardiniidae
Jo
uredi- Joculator
- Joellina
- Johania
- Johannesoconcha
- Jolya
- Jorgenia
- Jorunna
- Josefus
- Jouannetia
- Joubiniopsis
- Joubiniteuthidae
- Joubiniteuthis
- Jousseaumia
Ju
uredi- Jubaia
- Juga
- Jujubinus augustoi Rolán & Gori, 2009
- Jujubinus baudoni (Monterosato, 1891)
- Jujubinus catenatus Ardovini, 2006
- Jujubinus curinii Bogi & Campani, 2006
- Jujubinus dispar Curini-Galletti, 1982
- Jujubinus eleonorae Smriglio, Di Giulio & Mariottini, 2014
- Jujubinus escondidus Poppe, Tagaro & Dekker, 2006
- Jujubinus exasperatus (Pennant, 1777)
- Jujubinus fulgor Gofas, 1991
- Jujubinus geographicus Poppe, Tagaro & Dekker, 2006
- Jujubinus gilberti (Montrouzier in Fischer, 1878)
- Jujubinus gravinae (Dautzenberg, 1881)
- Jujubinus guanchus Curini-Galletti, 1985
- Jujubinus guphili Poppe, Tagaro & Dekker, 2006
- Jujubinus hernandezi Rolán & Swinnen, 2009
- Jujubinus hubrechti Poppe, Tagaro & Dekker, 2006
- Jujubinus interruptus (Wood, 1828)
- Jujubinus karpathoensis Nordsieck, 1973
- Jujubinus mabelae Rolán & Swinnen, 2009
- Jujubinus montagui (W. Wood, 1828)
- Jujubinus polychromus (Adams, 1853)
- Jujubinus poppei Curini-Galletti, 1985
- Jujubinus pseudogravinae Nordsieck, 1973
- Jujubinus rafaemesai Rolán & Swinnen, 2013
- Jujubinus rubioi Rolán & Templado, 2001
- Jujubinus ruscurianus (Weinkauff, 1868)
- Jujubinus seguenzae Ghisotti & Melone, 1975 (nomen dubium)
- Jujubinus striatus (Linnaeus, 1758)
- Jujubinus suarezensis (P. Fischer, 1878)
- Jujubinus trilloi Smriglio, Di Giulio & Mariottini, 2014
- Jujubinus tumidulus (Aradas, 1846)
- Jujubinus unidentatus (Philippi, 1844)
- Jujubinus vexationis Curini-Galletti, 1990
Mollusca → Gastropoda → Vetigastropoda → Trochoidea → Trochidae → Cantharidinae
- Jukesena
- Julia
- Juliacorbula
- Juliidae
- Jullienia
- Jupiteria
Juvenichiton Sirenko, 1975
uredi- Juvenichiton albocinnamomeus Sirenko, 1975
- Juvenichiton komandorensis Sirenko, 1975
- Juvenichiton saccharinus (Dall, 1878)
Mollusca → Polyplacophora → Chitonida → Mopalioidea → Lepidochitonidae → Juvenichitoninae
- Juxtamusium